Plastic deformation by glassy structure control in Zr-Al-Ni-Cu-based BMGs

J. Saida, A. D. Setyawan, H. Kato, M. Matsushita, A. Inoue

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Zr65Al7.5Ni10Cu17.5-xPd x (x = 0-17.5) bulk metallic glasses (BMGs) were produced in various chamber atmospheres in Cu mold casting. The glassy structure with a larger amount of relaxation enthalpy can be obtained casting under the ambient Ar and He atmospheres, which originates from enhanced cooling effect. These unrelaxed BMGs exhibit an improvement of ductility in the compressive deformation. Especially, Pd-containing BMGs have a significant plasticity of approximately 6%, in which deformation-induced inhomogeneous nanocrystallization also occurs. The synergistic effect of unrelaxed glassy structure and deformation-induced nanostructure change is regarded as a new technique for the improvement of ductility in the BMGs.

Original languageEnglish
Pages (from-to)S52-S55
JournalJournal of Alloys and Compounds
Volume504
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2010 Aug

Keywords

  • Mechanical properties
  • Metallic glasses
  • Microstructure
  • Phase transitions
  • Thermal analysis
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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